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  <title>返回给定的日期与地点的日出时间</title>
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  <div id="layout-content"><div id="function.date-sunrise" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">date_sunrise</h1>
  <p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">date_sunrise</span> &mdash; <span class="dc-title">返回给定的日期与地点的日出时间</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.date-sunrise-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>date_sunrise</strong></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$timestamp</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$format</code><span class="initializer"> = SUNFUNCS_RET_STRING</span></span>
   [, <span class="methodparam"><span class="type">float</span> <code class="parameter">$latitude</code><span class="initializer"> = ini_get(&quot;date.default_latitude&quot;)</span></span>
   [, <span class="methodparam"><span class="type">float</span> <code class="parameter">$longitude</code><span class="initializer"> = ini_get(&quot;date.default_longitude&quot;)</span></span>
   [, <span class="methodparam"><span class="type">float</span> <code class="parameter">$zenith</code><span class="initializer"> = ini_get(&quot;date.sunrise_zenith&quot;)</span></span>
   [, <span class="methodparam"><span class="type">float</span> <code class="parameter">$gmt_offset</code><span class="initializer"> = 0</span></span>
  ]]]]] ) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>date_sunrise()</strong></span> 返回给定的日期（以
   <code class="parameter">timestamp</code> 指定）与地点的日出时间。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.date-sunrise-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">timestamp</code></dt>

     <dd>

      <p class="para">       
       取 <code class="parameter">timestamp</code>所在日期的日出时间。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">format</code></dt>

     <dd>

      <p class="para">
       <table class="doctable table">
        <caption><strong><code class="parameter">format</code> 常量</strong></caption>
        
         <thead>
          <tr>
            <th>常量</th>
      <th>说明</th>
      <th>取值举例</th>
          </tr>

         </thead>

         <tbody class="tbody">
          <tr>
           <td>SUNFUNCS_RET_STRING</td>
      <td>以 <span class="type"><a href="language.types.string.html" class="type string">string</a></span> 格式返回结果</td>
           <td>16:46</td>
          </tr>

          <tr>
           <td>SUNFUNCS_RET_DOUBLE</td>
      <td>以 <span class="type"><a href="language.types.float.html" class="type float">float</a></span> 格式返回结果</td>
           <td>16.78243132</td>
          </tr>

          <tr>
           <td>SUNFUNCS_RET_TIMESTAMP</td>
      <td>以 <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> 格式（时间戳）返回结果</td>
           <td>1095034606</td>
          </tr>

         </tbody>
        
       </table>

      </p>
     </dd>

    
    
     <dt>
<code class="parameter">latitude</code></dt>

     <dd>

      <p class="para">
       默认是指北纬。因此如果要指定南纬，必须传递一个负值。
       参见 <em>date.default_latitude</em>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">longitude</code></dt>

     <dd>

      <p class="para">
       默认是指东经。因此如果要指定西经，必须传递一个负值。
       参见 <em>date.default_longitude</em>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">zenith</code></dt>

     <dd>

      <p class="para">
       默认： <em>date.sunrise_zenith</em>。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">gmtoffset</code></dt>

     <dd>

      <p class="para">
         单位是小时。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.date-sunrise-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   按指定格式 <code class="parameter">format</code> 返回的日出时间， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-function.date-sunrise-errors">
  <h3 class="title">错误／异常</h3>
   
   <p class="para">
在每 次调用日期/时间函数时，如果时区无效则会引发 <strong><code>E_NOTICE</code></strong> 错误，如果使用系统设定值或 <var class="varname"><var class="varname">TZ</var></var>
环境变量，则会引发 <strong><code>E_STRICT</code></strong> 或 <strong><code>E_WARNING</code></strong> 消息。参见
<span class="function"><a href="date_default_timezone_set.html" class="function">date_default_timezone_set()</a></span>。</p>
 
 </div>


 <div class="refsect1 changelog" id="refsect1-function.date-sunrise-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      
      <tr><td>5.1.0</td><td><p class="para">
现在发布 <strong><code>E_STRICT</code></strong> 和 <strong><code>E_NOTICE</code></strong>
时区错误。</p></td></tr>

     
     </tbody>
    
   </table>

  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.date-sunrise-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2710">
    <p><strong>Example #1 <span class="function"><strong>date_sunrise()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">/*&nbsp;计算葡萄牙里斯本的日出时间<br />Latitude:&nbsp;&nbsp;北纬&nbsp;38.4&nbsp;度<br />Longitude:&nbsp;西经&nbsp;9&nbsp;度<br />Zenith&nbsp;~=&nbsp;90<br />offset:&nbsp;+1&nbsp;GMT<br />*/<br /><br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"D&nbsp;M&nbsp;d&nbsp;Y"</span><span style="color: #007700">).&nbsp;</span><span style="color: #DD0000">',&nbsp;sunrise&nbsp;time&nbsp;:&nbsp;'&nbsp;</span><span style="color: #007700">.</span><span style="color: #0000BB">date_sunrise</span><span style="color: #007700">(</span><span style="color: #0000BB">time</span><span style="color: #007700">(),&nbsp;</span><span style="color: #0000BB">SUNFUNCS_RET_STRING</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">38.4</span><span style="color: #007700">,&nbsp;-</span><span style="color: #0000BB">9</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">90</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Mon Dec 20 2004, sunrise time : 08:54
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.date-sunrise-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="date_sunset.html" class="function" rel="rdfs-seeAlso">date_sunset()</a> - 返回给定的日期与地点的日落时间</span></li>
   </ul>
  </p>
 </div>

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